CA1221584A - Checking device for use in hotel refrigerators and other lockable self-service apparatuses - Google Patents
Checking device for use in hotel refrigerators and other lockable self-service apparatusesInfo
- Publication number
- CA1221584A CA1221584A CA000444329A CA444329A CA1221584A CA 1221584 A CA1221584 A CA 1221584A CA 000444329 A CA000444329 A CA 000444329A CA 444329 A CA444329 A CA 444329A CA 1221584 A CA1221584 A CA 1221584A
- Authority
- CA
- Canada
- Prior art keywords
- checking device
- indicating element
- key
- door
- slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B39/00—Locks giving indication of authorised or unauthorised unlocking
- E05B39/04—Locks giving indication of authorised or unauthorised unlocking with counting or registering devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
Landscapes
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Refrigerator Housings (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cash Registers Or Receiving Machines (AREA)
- Audible And Visible Signals (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A checking device, for use on a movable member such as a door on hotel refrigerators and other lockable self-service apparatuses, is provided with an externally visible indicating element which is activated when the apparatus is opened with an apparatus key and is gravitationally biased to remain in an activated state regardless of subsequent openings of the apparatus until the indicating element is reset to an inactivated initial state by actuation of a setting member by means of a key.
A checking device, for use on a movable member such as a door on hotel refrigerators and other lockable self-service apparatuses, is provided with an externally visible indicating element which is activated when the apparatus is opened with an apparatus key and is gravitationally biased to remain in an activated state regardless of subsequent openings of the apparatus until the indicating element is reset to an inactivated initial state by actuation of a setting member by means of a key.
Description
Checking Device for Use in Hotel Refrigerators and other Lockable Self-Service Apparatuses In a wide yariety of gastronomical establishments, espe-cially in hotels, boarding houses or the like, self-service refrigerators containing yarious beverages and possibly packaged food are ayailable in the rooms to answer the guests' ~. ~
1~2~5~34 needs for beverages without their having to call for the attendant personnel. In order to p-reclude access to the beverages by unauthorize~ persons such hotel refrigerators are frequently equip?ed with locks and the refrigerator key is handed to the guest together with his room key.
Hence, the contents of the refrigerators can be taken out only by the authorized guest or tenant. After certain time intervals the refrigerators are checked by the hotel per-sonnel, e.g. during the daily clean-up of the rooms, and any consumed articles are replenished. To this end also the authorized hotel personnel carries suita~le keys for the refrigerators.
In order to be able to perform this service to the guests' satisfaction it has hitherto been necessary to check each refrigerator at least once a day as to whether any bever-ages were taken out by the guest. For this purpose each refrigerator door must be opened and its contents must be inspected even if nothing was taken out. This frequently unnecessary inspection is labor and time consum;ng.
In order to avoid this par-tially unnecessary expense it has already been proposed to provide marked paper strips which the hotel personnel thread through two eyes and whîch are t supposed to tear when the lock is actuated or when the re-Y frigerator door is opened. However, the insertion and seal-ing (gluing) o~ a new strip through the eyes likewise re-~uires some time and it is possible - and undesirable from the standpoint of the management - that the strips can be glued together again by the guest after he has taken some of the contents out of the refrigerator.
This may have the co~sequence that regular check and inspect-ion is not performed because the paper strips glued together again give the impression of a completely filled re~rigerator, so that the beverages may possibly be put on the bill oE the next following guest, though they were missing already on his arrival.
It is the object of the invention to provide a checking device for hotel refrigerators and possibly other self-service apparatuses which indicates whether the apparatus has been opened or used in the meantime.
According to the invention, there is provided a checking device for use on a movable member such as a door on hotel refrigerators and other lockable self-service apparatuses, wherein the checking device is provided with an externally visible indicating element which is activated when the apparatus i8 opened with an apparatus key and is gravitationally biased to remain in an activated state and which indicating element remains ln the activated state regardless of subsequent openings of the apparatus until the indicating element is reset to an inactivated initial state by actuation of a setting member by means of a key.
The checking device of the invention has the effect that, when a hotel guest opens the refrigerator, the indicating element provided, for example, at the refrigerator wall or door, is activated and indicates to the personnel that the refrigerator was opened and that the consumed contents must be replenished. This implies a considerable reduction of work because the personnel must open, inspect, and refill only the refrigerators whose indicating elements are activated.
Preferably, the indicating element is contained in the interior of a housing so as to be safeguarded against unauthorized manipulation, the housing being coupled with a door lock of the apparatus, that a key-operated slide B
5(~
activates the indicating element only upon initial opening of the apparatus, and the setting member is coupled with the indicating element and is actuatable independently of the door loc~.
~nother suitable embodiment of the invention comprises an indicator means coupled with the respective door hinge and the indic~ting element, e.g. a light bulb, is electrically connected to the switch of a circuit which is closed when the door is opened and thus causes the bulb to light up and stay lit. It is essential that, after closing of the door, the ~switch remains closed and thus the signal light remains lit until the switch is opened again by the authorized ilotel personnelO
The indicating element may also be a colored marker which moves behind a window in the door wall thus indicating that the apparatus was opened. In case of purely mechanical actuation of the checking device the indicator means can suitably be mounted directly beside the door lock on the inside o~ the door, and the slide is moved as the key is turned or the handle is turned against the force of a spring, whereby a retainer releases the indicating element designed as a swivel plate so that its colored portion moves into the region of the window in the door.
Hereafter an example of the invention will be described in detail with reference to the drawing in which Fig. 1 shows a closed hotel refrigerator in perspective view;
B
Fig. 2 is a diagrammatic plan view of a checking device adapted to be mounted to the inter-ior wall of a refrigerator door directly adjacent a door lock;
Fig. 3 is a section through the checking device of Fig. 2.
The hotel refrigerator illustrated in Fig. 1 is provided with the checking device fastened to the inside of its door 1; the indicating element designed as a retaining catch 12 becomes ~isible in a window 5 ~fter the refriger-ator was opened by a gues~ by the insertion of a suitable key into a keyhole 4. A~ter the hotel personnel replen-ished the consumed refrigerator contents, the indicating element can be moved away from the window 5 by the insert-ion of a key into a further keyhole 3.
Fig. 2 shows the checking device mounted to the inside of the door 1. In a sturdy plastic housing 6 a slide 7 is arranged so as to be slidable along guides against the force of a spring 8. A lug 9 at the slide, disposed on the left hand side thereof in Fig. 2, extends into the door lock 10 and is shifted in the direction o the arrow B against the force of the spring 8 as a key inserted into the keyhole 4 is turned. Furthermore, in the slide 7 a re-tainer bolt 11 is seated which, in the illustrated state of operation, forms a stop for the indicating element de-signed as a retainer catch 12. Said retainer catch 12 in the form of a swivel plate is mounted for co-rotation on an axially fixed pin 13 rotatably supported in the plastic housîng 6 and has a colored portion 14 at its smaller end.
1~215~3~
In Fig. 3 the pin 13 supporting the retainer catch 12 is secured in the plastic housing 6 of the checking device.
The end of the supporting pin 13,which is disposed below in Fig. 3, extends a~out halfway into the keyhole 3 with lateral clearance and is designed for receiving a specially shaped key 15.
i The above described checking device operates as follows:
When a guest unlocks the door lock 10, the slide 7 is moved to the righ,t against the force of the spring 8 in Fig. 2.
The retainer pin 11 fixedly mounted to the slide 7 is thereby disengaged from the nose formed on the retainer catsh 12 so that the retainer catch can s~.7ivel Dy gravity a~out the support;ng pin 13 into its vertical position. As a consequence, the colored portion 14 of the retainer catch moves before the glass-covered window. After the guest has closed thR refrigerator door, or after he pulled out the key, the slide 7, under the force of the spring 8, moves back to -the illustrated position in a direction opposite to that of arro~ B. However, since the nose shaped integrally on the retainer catch is no longer in the range of engagement by th,e pin 11, the retainer catch 12 remains in its vertically suspended position. Only after the insertion of the special-ly shaped key 15 into the keyhole 3 and turning of the support-ing pin 13 is the retainer catch turned out of the region of the ~indow 5 into the position shown in Fig. 2, while the low-er end of the pin 11 slidingly received in the slide is vert-ically shifted along the edge of the retainer catch 12 beyond the nose formed thereon.
The invention is not limited to the illustrated example, Thus, for instance, in lieu of the purely mechanical indicator means also electric indication can be provided; in that case a light bulb or a light conducting rod is arranged as indicating element in the window 5, and by the unlock-ing operation or by the opening movement of the door a switch is actuated which durably closes the lamp circui-t and thus causes -the bulb to light up and serve as in-dicating element. The electric circuit is interrupted, and thus the light is extinguished, only by the hotel per-sonnel by way of a concealed push button or by means of a special ~ey.
still further embodiment may be used in which the indic-ating e]ement 12 is reset, or the light is extinguished, by the insertion of a specially designed key into the ordinary keyhole 4~ In this case the guest and the hotel personnel have differently designed keys, and this guarantees that, whenever the authorized hotel personnel opens a refrigerator, the indicating element is automatic-ally returned to its initial position so that resetting after replenishment of a refrigerator's contents cannot be forgotten.
1~2~5~34 needs for beverages without their having to call for the attendant personnel. In order to p-reclude access to the beverages by unauthorize~ persons such hotel refrigerators are frequently equip?ed with locks and the refrigerator key is handed to the guest together with his room key.
Hence, the contents of the refrigerators can be taken out only by the authorized guest or tenant. After certain time intervals the refrigerators are checked by the hotel per-sonnel, e.g. during the daily clean-up of the rooms, and any consumed articles are replenished. To this end also the authorized hotel personnel carries suita~le keys for the refrigerators.
In order to be able to perform this service to the guests' satisfaction it has hitherto been necessary to check each refrigerator at least once a day as to whether any bever-ages were taken out by the guest. For this purpose each refrigerator door must be opened and its contents must be inspected even if nothing was taken out. This frequently unnecessary inspection is labor and time consum;ng.
In order to avoid this par-tially unnecessary expense it has already been proposed to provide marked paper strips which the hotel personnel thread through two eyes and whîch are t supposed to tear when the lock is actuated or when the re-Y frigerator door is opened. However, the insertion and seal-ing (gluing) o~ a new strip through the eyes likewise re-~uires some time and it is possible - and undesirable from the standpoint of the management - that the strips can be glued together again by the guest after he has taken some of the contents out of the refrigerator.
This may have the co~sequence that regular check and inspect-ion is not performed because the paper strips glued together again give the impression of a completely filled re~rigerator, so that the beverages may possibly be put on the bill oE the next following guest, though they were missing already on his arrival.
It is the object of the invention to provide a checking device for hotel refrigerators and possibly other self-service apparatuses which indicates whether the apparatus has been opened or used in the meantime.
According to the invention, there is provided a checking device for use on a movable member such as a door on hotel refrigerators and other lockable self-service apparatuses, wherein the checking device is provided with an externally visible indicating element which is activated when the apparatus i8 opened with an apparatus key and is gravitationally biased to remain in an activated state and which indicating element remains ln the activated state regardless of subsequent openings of the apparatus until the indicating element is reset to an inactivated initial state by actuation of a setting member by means of a key.
The checking device of the invention has the effect that, when a hotel guest opens the refrigerator, the indicating element provided, for example, at the refrigerator wall or door, is activated and indicates to the personnel that the refrigerator was opened and that the consumed contents must be replenished. This implies a considerable reduction of work because the personnel must open, inspect, and refill only the refrigerators whose indicating elements are activated.
Preferably, the indicating element is contained in the interior of a housing so as to be safeguarded against unauthorized manipulation, the housing being coupled with a door lock of the apparatus, that a key-operated slide B
5(~
activates the indicating element only upon initial opening of the apparatus, and the setting member is coupled with the indicating element and is actuatable independently of the door loc~.
~nother suitable embodiment of the invention comprises an indicator means coupled with the respective door hinge and the indic~ting element, e.g. a light bulb, is electrically connected to the switch of a circuit which is closed when the door is opened and thus causes the bulb to light up and stay lit. It is essential that, after closing of the door, the ~switch remains closed and thus the signal light remains lit until the switch is opened again by the authorized ilotel personnelO
The indicating element may also be a colored marker which moves behind a window in the door wall thus indicating that the apparatus was opened. In case of purely mechanical actuation of the checking device the indicator means can suitably be mounted directly beside the door lock on the inside o~ the door, and the slide is moved as the key is turned or the handle is turned against the force of a spring, whereby a retainer releases the indicating element designed as a swivel plate so that its colored portion moves into the region of the window in the door.
Hereafter an example of the invention will be described in detail with reference to the drawing in which Fig. 1 shows a closed hotel refrigerator in perspective view;
B
Fig. 2 is a diagrammatic plan view of a checking device adapted to be mounted to the inter-ior wall of a refrigerator door directly adjacent a door lock;
Fig. 3 is a section through the checking device of Fig. 2.
The hotel refrigerator illustrated in Fig. 1 is provided with the checking device fastened to the inside of its door 1; the indicating element designed as a retaining catch 12 becomes ~isible in a window 5 ~fter the refriger-ator was opened by a gues~ by the insertion of a suitable key into a keyhole 4. A~ter the hotel personnel replen-ished the consumed refrigerator contents, the indicating element can be moved away from the window 5 by the insert-ion of a key into a further keyhole 3.
Fig. 2 shows the checking device mounted to the inside of the door 1. In a sturdy plastic housing 6 a slide 7 is arranged so as to be slidable along guides against the force of a spring 8. A lug 9 at the slide, disposed on the left hand side thereof in Fig. 2, extends into the door lock 10 and is shifted in the direction o the arrow B against the force of the spring 8 as a key inserted into the keyhole 4 is turned. Furthermore, in the slide 7 a re-tainer bolt 11 is seated which, in the illustrated state of operation, forms a stop for the indicating element de-signed as a retainer catch 12. Said retainer catch 12 in the form of a swivel plate is mounted for co-rotation on an axially fixed pin 13 rotatably supported in the plastic housîng 6 and has a colored portion 14 at its smaller end.
1~215~3~
In Fig. 3 the pin 13 supporting the retainer catch 12 is secured in the plastic housing 6 of the checking device.
The end of the supporting pin 13,which is disposed below in Fig. 3, extends a~out halfway into the keyhole 3 with lateral clearance and is designed for receiving a specially shaped key 15.
i The above described checking device operates as follows:
When a guest unlocks the door lock 10, the slide 7 is moved to the righ,t against the force of the spring 8 in Fig. 2.
The retainer pin 11 fixedly mounted to the slide 7 is thereby disengaged from the nose formed on the retainer catsh 12 so that the retainer catch can s~.7ivel Dy gravity a~out the support;ng pin 13 into its vertical position. As a consequence, the colored portion 14 of the retainer catch moves before the glass-covered window. After the guest has closed thR refrigerator door, or after he pulled out the key, the slide 7, under the force of the spring 8, moves back to -the illustrated position in a direction opposite to that of arro~ B. However, since the nose shaped integrally on the retainer catch is no longer in the range of engagement by th,e pin 11, the retainer catch 12 remains in its vertically suspended position. Only after the insertion of the special-ly shaped key 15 into the keyhole 3 and turning of the support-ing pin 13 is the retainer catch turned out of the region of the ~indow 5 into the position shown in Fig. 2, while the low-er end of the pin 11 slidingly received in the slide is vert-ically shifted along the edge of the retainer catch 12 beyond the nose formed thereon.
The invention is not limited to the illustrated example, Thus, for instance, in lieu of the purely mechanical indicator means also electric indication can be provided; in that case a light bulb or a light conducting rod is arranged as indicating element in the window 5, and by the unlock-ing operation or by the opening movement of the door a switch is actuated which durably closes the lamp circui-t and thus causes -the bulb to light up and serve as in-dicating element. The electric circuit is interrupted, and thus the light is extinguished, only by the hotel per-sonnel by way of a concealed push button or by means of a special ~ey.
still further embodiment may be used in which the indic-ating e]ement 12 is reset, or the light is extinguished, by the insertion of a specially designed key into the ordinary keyhole 4~ In this case the guest and the hotel personnel have differently designed keys, and this guarantees that, whenever the authorized hotel personnel opens a refrigerator, the indicating element is automatic-ally returned to its initial position so that resetting after replenishment of a refrigerator's contents cannot be forgotten.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A checking device for use on a movable member such as a door on hotel refrigerators and other lockable self-service apparatuses, wherein said checking device is provided with an externally visible indicating element which is activated when said apparatus is opened with an apparatus key and is gravitationally biased to remain in an activated state and which indicating element remains in the activated state regardless of subsequent openings of the apparatus until the indicating element is reset to an inactivated initial state by actuation of a setting member by means of a key.
2. A checking device according to Claim 1, wherein the indicating element is contained in the interior of a housing so as to be safeguarded against unauthorized manipulation, said housing being coupled with a door lock of the apparatus, a key-operated slide activates the indicating element only upon initial opening of the apparatus, and the setting member is coupled with the indicating element and is actuatable independently of the door lock.
3. A checking device according to Claim 2, wherein the slide is movable by the apparatus key against the force of a spring, said slide slidably supporting a retainer for the indicating element.
4. A checking device according to Claim 3, wherein the retainer is a stop slidably mounted in the slide and engaging a nose on the indicating element designed as a colored retainer catch.
5. A checking device according to Claim 1, wherein the indicator element can be moved to a non-indicating position only by means of said device key.
6. A checking device according to Claim 1, wherein the indicator element is accommodated in a plastic housing mounted to the inside of the door of the apparatus directly beside a door lock of the apparatus.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3300575.3-16 | 1983-01-10 | ||
| DE3300575A DE3300575C2 (en) | 1983-01-10 | 1983-01-10 | Control device for hotel refrigerators and other lockable self-service devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1221584A true CA1221584A (en) | 1987-05-12 |
Family
ID=6187976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000444329A Expired CA1221584A (en) | 1983-01-10 | 1983-12-28 | Checking device for use in hotel refrigerators and other lockable self-service apparatuses |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4596203A (en) |
| EP (1) | EP0116158B1 (en) |
| JP (2) | JPS59137775A (en) |
| AT (1) | ATE28227T1 (en) |
| CA (1) | CA1221584A (en) |
| DE (1) | DE3300575C2 (en) |
| ES (1) | ES8406863A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2169949A (en) * | 1985-01-19 | 1986-07-23 | Kenrick & Sons Limited Archiba | Door or window fastening |
| GB2182093B (en) * | 1985-10-23 | 1989-10-04 | Chubb & Sons Lock & Safe Co | Locks |
| US4864283A (en) * | 1986-06-30 | 1989-09-05 | Tandem Computers, Incorporated | Temperature alarm |
| US4942386A (en) * | 1988-12-16 | 1990-07-17 | Willis Billy R | Integrated impact detection and alarm system |
| US4912456A (en) * | 1988-12-27 | 1990-03-27 | Mickel Thattil J | Door latch alarm |
| FR2659377B1 (en) * | 1990-03-08 | 1992-07-03 | Ait Inter Lignes Aeriennes Int | LOCKABLE LOCK, PARTICULARLY FOR CARS PROVIDING DRINKS ON AIRPLANES. |
| JP2622424B2 (en) * | 1990-04-05 | 1997-06-18 | ファナック株式会社 | Maintenance time monitoring device for laser processing machine system |
| US5276435A (en) * | 1990-07-03 | 1994-01-04 | Rossides Michael T | Labelling system for deterring the theft of a very wide variety of items |
| DE9017146U1 (en) * | 1990-12-19 | 1991-03-14 | BSH Bosch und Siemens Hausgeräte GmbH, 81669 München | Locking device for a door arranged on a box-like container |
| US5081444A (en) * | 1991-02-07 | 1992-01-14 | Bear Automotive Service Equipment Company | Automotive vehicle test equipment with anti-tamper device |
| US5774053A (en) * | 1996-05-02 | 1998-06-30 | Porter; David | Storage device for the delivery and pickup of goods |
| US6426699B1 (en) | 1998-12-02 | 2002-07-30 | David Porter | Collapsible storage device for the delivery and pickup of goods |
| US6820805B2 (en) * | 2000-06-03 | 2004-11-23 | Ebox Usa Inc. | Computerized recording and notification of the delivery and pickup of retail goods |
| DE10122518B4 (en) * | 2001-05-09 | 2013-08-08 | Wietmarscher Ambulanz- Und Sonderfahrzeug Gmbh | Display device on lockable containers |
| FR2877756B1 (en) * | 2004-11-09 | 2007-01-05 | Sagem | DEVICE INDICATING DEVICE FOR MOVING AND RETURNING A MOBILE ELEMENT, AND LOCKING DEVICE EQUIPPED WITH SUCH A DEVICE INDICATING |
| JP3133890U (en) * | 2007-05-16 | 2007-07-26 | 株式会社日立ハイテクノロジーズ | Sample processing system |
| WO2016172138A1 (en) * | 2015-04-24 | 2016-10-27 | Southco, Inc. | Latch with indicator and latch system |
| JP6495873B2 (en) * | 2016-08-24 | 2019-04-03 | 株式会社栃木屋 | Display device |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10727C (en) * | G. GEMMERICH in Barmen | Security lock with control device | ||
| US1030196A (en) * | 1911-06-02 | 1912-06-18 | George H Lucier | Burglar-alarm. |
| US1131278A (en) * | 1913-07-05 | 1915-03-09 | Henry W Skinner | Automatic supervision of service in hotels and the like. |
| US1429306A (en) * | 1921-12-13 | 1922-09-19 | Vining Leonard Edward | Apparatus for preventing theft from closed compartments |
| US2266086A (en) * | 1940-10-07 | 1941-12-16 | Schlage Lock Co | Door lock actuated switch |
| US2637801A (en) * | 1952-06-12 | 1953-05-05 | Kelley | Door lock and light control switch arrangement |
| US2922150A (en) * | 1957-04-19 | 1960-01-19 | Jezl Anton | Door alarm |
| DE1152915B (en) * | 1957-07-10 | 1963-08-14 | Antonio Marcante | Door lock, especially for hotel room doors |
| US3011163A (en) * | 1957-10-09 | 1961-11-28 | Robert M Britt | Burglar alarm |
| US3427835A (en) * | 1967-01-03 | 1969-02-18 | Saul Jeffee | Locking arrangement with indicator |
| US3644920A (en) * | 1969-01-27 | 1972-02-22 | Melvyn T Cartledgc | Combination support and alarm system |
| US3611333A (en) * | 1969-01-29 | 1971-10-05 | Nicholas Conigliaro | Mailbox operated electronic signal device |
| US3653022A (en) * | 1969-05-09 | 1972-03-28 | Murry Tall | Burglar and fire alarm system |
| US3893095A (en) * | 1974-05-31 | 1975-07-01 | Dennis E Dejong | Alarm device for indicating the removal of a fire extinguisher |
| US4040382A (en) * | 1976-06-11 | 1977-08-09 | Sheppard Howard H | Indicator for relay or the like |
| DE2632698C2 (en) * | 1976-07-21 | 1985-04-11 | Heinrich Wilke | Door fitting |
| US4102164A (en) * | 1977-06-27 | 1978-07-25 | Allen Taradash | Theft prevention apparatus for a motor vehicle |
| US4196422A (en) * | 1978-01-03 | 1980-04-01 | Teledyne Industries, Inc. | Intrusion alarm system |
| US4283718A (en) * | 1979-07-02 | 1981-08-11 | Synco National Ltd. | Door alarm device |
| US4437607A (en) * | 1981-01-08 | 1984-03-20 | Edward Negosta | Mail box signal |
| US4465997A (en) * | 1981-01-26 | 1984-08-14 | Security Network International, Inc. | Exterior mounted door and window alarm switch |
| US4427975A (en) * | 1981-04-29 | 1984-01-24 | Kinzie James E | Unopened-door indicator |
-
1983
- 1983-01-10 DE DE3300575A patent/DE3300575C2/en not_active Expired
- 1983-12-20 EP EP83112836A patent/EP0116158B1/en not_active Expired
- 1983-12-20 AT AT83112836T patent/ATE28227T1/en not_active IP Right Cessation
- 1983-12-28 US US06/566,146 patent/US4596203A/en not_active Expired - Lifetime
- 1983-12-28 CA CA000444329A patent/CA1221584A/en not_active Expired
-
1984
- 1984-01-09 JP JP59001812A patent/JPS59137775A/en active Pending
- 1984-01-09 ES ES528752A patent/ES8406863A1/en not_active Expired
-
1989
- 1989-07-17 JP JP1989083955U patent/JPH0228074U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0116158A2 (en) | 1984-08-22 |
| ATE28227T1 (en) | 1987-07-15 |
| ES528752A0 (en) | 1984-09-01 |
| JPS59137775A (en) | 1984-08-07 |
| ES8406863A1 (en) | 1984-09-01 |
| JPH0228074U (en) | 1990-02-23 |
| EP0116158B1 (en) | 1987-07-08 |
| EP0116158A3 (en) | 1984-12-05 |
| US4596203A (en) | 1986-06-24 |
| DE3300575A1 (en) | 1984-07-19 |
| DE3300575C2 (en) | 1985-02-14 |
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